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-rw-r--r--auth-shadow.c135
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1/*
2 * Copyright (c) 2004 Darren Tucker. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include "includes.h"
26RCSID("$Id: auth-shadow.c,v 1.5 2004/02/21 23:22:05 dtucker Exp $");
27
28#if defined(USE_SHADOW) && defined(HAS_SHADOW_EXPIRE)
29#include <shadow.h>
30
31#include "auth.h"
32#include "buffer.h"
33#include "log.h"
34
35#define DAY (24L * 60 * 60) /* 1 day in seconds */
36
37extern Buffer loginmsg;
38
39/*
40 * For the account and password expiration functions, we assume the expiry
41 * occurs the day after the day specified.
42 */
43
44/*
45 * Check if specified account is expired. Returns 1 if account is expired,
46 * 0 otherwise.
47 */
48int
49auth_shadow_acctexpired(struct spwd *spw)
50{
51 time_t today;
52 int daysleft;
53 char buf[256];
54
55 today = time(NULL) / DAY;
56 daysleft = spw->sp_expire - today;
57 debug3("%s: today %d sp_expire %d days left %d", __func__, (int)today,
58 (int)spw->sp_expire, daysleft);
59
60 if (spw->sp_expire == -1) {
61 debug3("account expiration disabled");
62 } else if (daysleft < 0) {
63 logit("Account %.100s has expired", spw->sp_namp);
64 return 1;
65 } else if (daysleft <= spw->sp_warn) {
66 debug3("account will expire in %d days", daysleft);
67 snprintf(buf, sizeof(buf),
68 "Your account will expire in %d day%s.\n", daysleft,
69 daysleft == 1 ? "" : "s");
70 buffer_append(&loginmsg, buf, strlen(buf));
71 }
72
73 return 0;
74}
75
76/*
77 * Checks password expiry for platforms that use shadow passwd files.
78 * Returns: 1 = password expired, 0 = password not expired
79 */
80int
81auth_shadow_pwexpired(Authctxt *ctxt)
82{
83 struct spwd *spw = NULL;
84 const char *user = ctxt->pw->pw_name;
85 char buf[256];
86 time_t today;
87 int daysleft, disabled = 0;
88
89 if ((spw = getspnam((char *)user)) == NULL) {
90 error("Could not get shadow information for %.100s", user);
91 return 0;
92 }
93
94 today = time(NULL) / DAY;
95 debug3("%s: today %d sp_lstchg %d sp_max %d", __func__, (int)today,
96 (int)spw->sp_lstchg, (int)spw->sp_max);
97
98#if defined(__hpux) && !defined(HAVE_SECUREWARE)
99 if (iscomsec()) {
100 struct pr_passwd *pr;
101
102 pr = getprpwnam((char *)user);
103
104 /* Test for Trusted Mode expiry disabled */
105 if (pr != NULL && pr->ufld.fd_min == 0 &&
106 pr->ufld.fd_lifetime == 0 && pr->ufld.fd_expire == 0 &&
107 pr->ufld.fd_pw_expire_warning == 0 &&
108 pr->ufld.fd_schange != 0)
109 disabled = 1;
110 }
111#endif
112
113 /* TODO: check sp_inact */
114 daysleft = spw->sp_lstchg + spw->sp_max - today;
115 if (disabled) {
116 debug3("password expiration disabled");
117 } else if (spw->sp_lstchg == 0) {
118 logit("User %.100s password has expired (root forced)", user);
119 return 1;
120 } else if (spw->sp_max == -1) {
121 debug3("password expiration disabled");
122 } else if (daysleft < 0) {
123 logit("User %.100s password has expired (password aged)", user);
124 return 1;
125 } else if (daysleft <= spw->sp_warn) {
126 debug3("password will expire in %d days", daysleft);
127 snprintf(buf, sizeof(buf),
128 "Your password will expire in %d day%s.\n", daysleft,
129 daysleft == 1 ? "" : "s");
130 buffer_append(&loginmsg, buf, strlen(buf));
131 }
132
133 return 0;
134}
135#endif /* USE_SHADOW && HAS_SHADOW_EXPIRE */